斜盤(pán)式與斜軸式軸向柱塞泵相比較,各有所長(zhǎng)斜軸式軸向柱塞泵采用了驅(qū)動(dòng)盤(pán)結(jié)構(gòu),使柱塞缸體不承受側(cè)向力,所以,缸體對(duì)配油盤(pán)的傾復(fù)可能性小,有利于柱塞副與配油部位工作,另外,允許的傾角大,可是,結(jié)構(gòu)復(fù)雜,工藝性差,需要使用大容量止推軸承,因而高壓連續(xù)工作時(shí)間往往受到限制,成本高。斜盤(pán)式軸向柱塞泵,由于配油盤(pán)與缸體、滑靴與柱塞這兩對(duì)高速運(yùn)動(dòng)副均采用了一靜壓支承,省去了大容量止推軸承,具有結(jié)構(gòu)緊湊,零件少,工藝性好,成本低,體積小,重量輕等優(yōu)點(diǎn),從而使該泵獲得了迅速發(fā)展,并且由于軸向泵比徑向泵結(jié)構(gòu)簡(jiǎn)單,制造成本低;
除應(yīng)具備密封圈材料的一般要求外,密封圈還要注意下述條件:(1)富有彈性和回彈性;(2)適當(dāng)?shù)臋C(jī)械強(qiáng)度,包括擴(kuò)張強(qiáng)度、伸長(zhǎng)率和抗撕裂強(qiáng)度等。(3)性能穩(wěn)定,在介質(zhì)中不易溶脹,熱收縮效應(yīng)(焦耳效應(yīng))小。(4)易加工成型,并能保持精密的尺寸。(5)不腐蝕接觸面,不污染介質(zhì)等。滿足上述要求的最適合而且最常用的材料是橡膠,所以密封圈大多用橡膠材料制成。橡膠的品種很多,而且不斷有新的橡膠品種出現(xiàn),設(shè)計(jì)與選用時(shí),應(yīng)了解各種橡膠的特性,合理選擇。
德國(guó)力士樂(lè)柱塞泵型號(hào):
A4VS0250LR3G/30R-PZB13N00-S0
A4VS071DR/31R-PPB
A4VG71DWDMT2/23L-NZF02F041D泵
柱塞泵A4VSO180DR/30R-FPB13N00
A2VK12MAOR4GOPE1-S029447172
A4VS0125DFR/30R-PPB13N00
E-A4VSO180DR/30R-PPB13N00
A4VSG250HSE/30R-PPB10N000N
A4VSG250HS/10R-PPB10NOO
A2VK12MAOR4GOPE1-S029447172
A4VG250HD1D1/32LNZD10F001S
A4VSO40DR10RPPB13100N
A4VSO71DR/10R-PPB13N00
A4VSG250HD1A/30R-PPB10K269N
A4VSG40EM2009/10R-PZB10N000N
A4VSG250HS1/30R-PPB10N000N
變量軸向柱塞泵A4VSO125DR/30R-PPB13N00
A4VSG250HS/10R-PPB10N00
A4VS040DR/10X-PPB13N00
A4VS0250DR/30RPPB13N00
A4VSG250EO1/22R-PPB10N000N
A4VS0125DR/22R-PPB13N00
柱塞泵A4VSG750HD/22R-PPH10NOO
A4VSG71EO1K/10R-PPB10H049N
A4VS0250DR/22R-PPB13N00
A4VS071DR/31R-PPB
A4VSG71HD1D/10R-PPB10K33ON
變量軸向柱塞泵A4VSO125DR/30R-PPB13N00
A4VS040DR/10R-PPB13NOO
A4VSO250E01/30R-PPB13N00-S0368
A4VSG250DP/30R-PPB10N00
A4VS0125DR/22R-PPB13N00
A4VS0180DR/30R-PPB13N00
A4VG71DWDMT2/23L-NZF02F041D
A10VS071DR/31R-PPA12N00
A4VG250HD1D1/32R-NSD10F001D
A4VS0250DR/30RPPB13N00
A4VG125EP2D1/32R-NAF02K691EP-4
A4VSG71HD1U/10R-PPB10N000N
變量軸向柱塞泵A4VSO125DR/30R-PPB13N00
A4VS0125DR/10R-PPB13N00
A4VG90EP2DT1/32R-NAF02F00
A4VSG250EM3066/30R-PPB10N009N
A4VSG500HD1AT/30R-PPH10K249N
A4VS0250E01/30R-PPBN00-S036
A4VS0250DR/30R-PPB13N00
A10VSO45DFR1/31R-PPA12N00
A4VSO500E02/30R-PPH13N00
A4VS0250DRG/30R-PPB13N00
A4VS0125DRG/30R-PPB13N00
A10VSO140DFR/31R-PPB12K26
A4VSG40HD1D/10R-PPB10K019N
A4VG90EP2DT1/32L-NAFO2F001D
A4VG125HDMT1/32R-NSFO21S-S
A4VSG250EO2/30R-PPB10H020N
A4VS0125DR/10R-PPB13N00
A4VSO71EO2/10R-PPB13NOO
A4VSO71EO2/10R-PPB13NOO
A4VG90HWD2/32R-PZF02F001S
A4VSG250EO2/30R-PPB10H020N
A4VSG250EM1007/30R-PPB10H029F
A4VSG71HD1T/10R-PPB100419N
A4VSO180DR/30R-PPB13N00
A4VSG40EM2009/10R-PPB10K310N
A4VG250HD1D1/32R-NSD10F001D
A4VSG250HS1/30L-PPB10N000N
柱塞在壓排結(jié)束時(shí),柱塞底腔內(nèi)仍舊會(huì)殘存一些為出口壓力 的油液,在柱塞進(jìn)入吸入行程時(shí),首先開(kāi)始膨脹,壓力降至吸入壓力 ,這樣便損失一部分吸入容積。因此采用了充填尼龍的柱塞,可以有效的減少柱塞底腔的殘留空間,從而減少油液壓彈性容積損失,提高容積效率。 傳統(tǒng)設(shè)計(jì)中缸套所使用的材料基本都是軸承鋼,從經(jīng)濟(jì)的角度考慮來(lái)說(shuō)是比普通鋼材要貴的,并且這種材料硬度高十分不好加工,所以我這次選用的是40Cr,即經(jīng)濟(jì)又便于加工。一般泵的壽命與配油盤(pán)和柱塞與缸體之間的滑動(dòng)部分的擦傷等是有關(guān),所以給缸體增加缸套,如果有擦傷的情況發(fā)生,只需更換一個(gè)缸套就可以了,從而不用去更換一個(gè)新的缸體,這樣既經(jīng)濟(jì)又方便,也延長(zhǎng)了泵的使用壽命。
s19hms220
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